One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,3)(5,6)(7,11)(8,16)(9,13)(10,15)(12,17)(14,18)(19,20)(21,22)(23,30)(24,33)(25,28)(26,32)(27,29)(31,35)(34,36)(1,3,4,2)(21,23)(22,26)(24,34)(25,31)(27,32)(28,36)(29,30)(33,35)(5,7)(6,10)(8,14)(9,15)(11,13)(12,18)(16,19)(17,20)(21,24,27,25)(22,28,29,33)(23,31,32,34)(26,35,30,36)(5,7)(6,11)(8,14)(9,15)(10,13)(12,19)(16,18)(17,20)(21,23)(22,26)(24,31)(25,34)(27,32)(28,35)(29,30)(33,36) involution — undirected(5,6)(7,10)(8,12)(9,13)(11,15)(14,18)(16,17)(19,20)(21,25,27,24)(22,28,29,33)(23,31,32,34)(26,36,30,35)(5,8,9,17)(6,12,13,16)(7,14,15,20)(10,18,11,19)(21,26)(22,23)(24,35)(25,36)(27,30)(28,31)(29,32)(33,34)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.